Investigations on Materials Used for Manufacturing the Rolling Rolls in Few Durability Experiments

Abstract

The aim of this work is to answer to as many questions possible regarding the quality of rolling rolls. In this sense, durability in exploitation is extremely current, both for immediate practice, and for the scientific research attributed to the rolls materials. This paper presents original experimental equipment for investigations of the durability of hot rolling rolls, which permits the evaluation of exploitation durability by studying the thermal fatigue phenomenon which appears in the case of rolling mills components. The exploitation durability is evaluated through thermal fatigue cycles up to crack point due to thermal fatigue for each condition and each type of studied material (steel and iron grades). The study on the hot rolling rolls thermal regime is a novelty from scientific and experimental viewpoint. In this sense, the purpose of this work is to present few directions concerning the quality improvement of the rolling rolls and suggests solutions meant to increase the durability of the rolls in exploitation and safety in the rolling process.